<!DOCTYPE>
<head>
<meta charset="utf-8">
    <title>请调整浏览器窗口</title>
    <meta http-equiv="content-type" content="text/html; charset=gb2312">
</head>
<body>
    <h2 align="center">请调整浏览器窗口大小</h2><hr>
    <form action="#" method="get" name="form1" id="form1">
        <!--显示浏览器窗口的实际尺寸-->
        浏览器窗口 的实际高度: <input type="text" name="availHeight" size="4"><br>
        浏览器窗口 的实际宽度: <input type="text" name="availWidth" size="4"><br>
    </form>
    <script type="text/javascript">
    <!--
        var winWidth = 0;
        var winHeight = 0;
        function findDimensions() //函数：获取尺寸
        {
             //获取窗口宽度
             if (window.innerWidth)
                   winWidth = window.innerWidth;
             else if ((document.body) && (document.body.clientWidth))
                   winWidth = document.body.clientWidth;
             //获取窗口高度
             if (window.innerHeight)
                   winHeight = window.innerHeight;
             else if ((document.body) && (document.body.clientHeight))
                   winHeight = document.body.clientHeight;
           
             //通过深入Document内部对body进行检测，获取窗口大小
             if (document.documentElement && document.documentElement.clientHeight && document.documentElement.clientWidth)
             {
                 winHeight = document.documentElement.clientHeight;
                 winWidth = document.documentElement.clientWidth;
             }
             
             //结果输出至两个文本框
             document.form1.availHeight.value= winHeight;
             document.form1.availWidth.value= winWidth;
        }
        findDimensions();                  //调用函数，获取数值
        window.onresize=findDimensions;
    //-->
    </script>
</body>
</html>